Fossil fuels
Starter
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BURNING
CAPROCK
CHEMICAL
COAL
ENERGY
FOSSILS
FUEL
HEAT
HEAT
LIGHT
OIL
PETROL
REMAINS
SMOKE
| L | L | G | N | I | N | R | U | B |
| L | L | Y | G | R | E | N | E | P |
| E | E | A | T | H | G | I | L | O |
| U | K | E | C | R | T | A | E | H |
| F | O | S | S | I | L | S | M | Q |
| S | M | L | X | L | M | M | I | L |
| Y | S | N | I | A | M | E | R | A |
| P | E | T | R | O | L | A | H | O |
| F | I | K | C | O | R | P | A | C |
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